Keyboard including trackball



FIG. 1 is a top plan view of a keyboard including trackball showing my new design;

FIG. 2 is a front elevational view of the keyboard including trackball of FIG. 1;

FIG. 3 is a rear elevational view of the keyboard including trackball of FIG. 1;

FIG. 4 is an elevational view of one side of the keyboard including trackball of FIG. 1;

FIG. 5 is an elevational view of the other side of the keyboard including trackball of FIG. 1; and

FIG. 6 is a bottom plan view of the keyboard including trackball of FIG. 1. 

The ornamental design for a keyboard including trackball, as shown and described. 